fix: Fix product page syntax errors

1. Remove duplicate/broken code in product tables section
2. Fix PostCSS config for Tailwind 4
3. Add @tailwindcss/postcss dependency
4. Remove --production flag from Dockerfile (sharp required)

All fixes enable successful Docker build with favicon working.

node_modules/picomatch/index.js

@@ -0,0 +1,17 @@
+'use strict';
+
+const pico = require('./lib/picomatch');
+const utils = require('./lib/utils');
+
+function picomatch(glob, options, returnState = false) {
+  // default to os.platform()
+  if (options && (options.windows === null || options.windows === undefined)) {
+    // don't mutate the original options object
+    options = { ...options, windows: utils.isWindows() };
+  }
+
+  return pico(glob, options, returnState);
+}
+
+Object.assign(picomatch, pico);
+module.exports = picomatch;